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Crystals 2019, 9(1), 41; https://doi.org/10.3390/cryst9010041

Decay Time Estimates by a Continuum Model for Inorganic Scintillators

DICEA and ICRYS, Universitá Politecnica delle Marche, 60131 Ancona, Italy
Received: 18 December 2018 / Revised: 9 January 2019 / Accepted: 11 January 2019 / Published: 15 January 2019
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Abstract

We use the phenomenological continuum model for inorganic scintillators proposed by the author to give decay time estimates for four scintillators previously studied, namely NaI:Tl, CaF2, Gd2SiO5Ce (GSO:Ce), and LaCl3:Ce. We show that, in order to obtain a good estimate of the decay time, we need to know (besides other well-known parameters) either the excitation carriers’ mobility or the structure and the parameters of the recombination mechanism. For these four materials, we know the data for the recombination term, whereas we have very scarce information about mobilities. However, we show that also in absence of experimentally-measured mobilities, with reasonable assumptions about them, we can obtain a good estimate for the slow component of the decay time. We show also when it is appropriate to model scintillation with one of the two most-used phenomenological models, the kinetic and the diffusive. The main point of the present approach is that it requires a limited set of experimentally-measured data and can be hopefully used in conjunction with more sophisticated and detailed models to design faster inorganic scintillators. View Full-Text
Keywords: inorganic scintillators; kinetic model; diffusive model; decay time inorganic scintillators; kinetic model; diffusive model; decay time
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Daví, F. Decay Time Estimates by a Continuum Model for Inorganic Scintillators. Crystals 2019, 9, 41.

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